package com.lagou.edu.service.impl;

import com.lagou.edu.anno.Autowired;
import com.lagou.edu.anno.Service;
import com.lagou.edu.anno.Transactional;
import com.lagou.edu.dao.AccountDao;
import com.lagou.edu.pojo.Account;
import com.lagou.edu.service.TransferService;

/**
 * 转账service
 */
@Service(value = "transferService")
public class TransferServiceImpl implements TransferService {

    @Autowired(value = "accountDao")
    private AccountDao accountDao;

    @Override
    @Transactional
    public void transfer(String fromCardNo, String toCardNo, int money) throws Exception {
        Account from = accountDao.queryAccountByCardNo(fromCardNo);
        Account to = accountDao.queryAccountByCardNo(toCardNo);
        from.setMoney(from.getMoney()-money);
        to.setMoney(to.getMoney()+money);
        try {
            accountDao.updateAccountByCardNo(to);
            //int c = 1/0;    // 制造异常
            accountDao.updateAccountByCardNo(from);
        } catch (Exception e) {
            throw new Exception("失败:" + e.getMessage());
        }
    }
}
